I almost passed on this collection, that is until I disregarded all the mixed reviews and made my own informed decision. I won't go into all the points of debate as that's been done over and over, the bottom line is this: Adding additional reverb to stereo tracks does not constitute a unique mix, nor does enhancing a mono track with a pseudo-stereo effect. The arguments to the contrary make about as much sense as if I twiddled the bass and treble knobs on my amplifier and claimed that it was also a unique mix.
Having said that, this is an excellent companion piece to 2009 The Beatles in Mono box, which was the only collection that I cared enough to purchase last time around. I was never dissatisfied with the 1987 CD reissues, and only added a few of the 2009 stereo reissues (Revolver, Sgt. Pepper's, Magical Mystery Tour, The Beatles, and Abbey Road) to my collection. I decided that I wanted the U.S. Albums Boxed Set for three reasons: the artwork, the few unique mixes (which are all included on this set, don't be fooled by the naysayers), and to have the remastered stereo versions of the songs I passed up by not purchasing their respective 2009 stereo reissues.
The first four Capitol albums do sound great with the additional reverb, which is why The Beatles Capitol Albums Vol. 1 box is still nice to have. However, the fidelity of the 2009 remasters, which were utilized in this compilation, are heads and shoulders above the Capitol boxes and the 1987 CDs.